JP2003203741A - Method and device for connecting wiring material with terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a wiring material to be connected by caulking with a terminal in the proper condition free of inclination or dislocation. <P>SOLUTION: When a end separate part 5a of a flexible flat cable as the wiring material is to be caulked to the cable connection part 4 of the terminal on the piercing system, the end separate part 5a is held being pinched by a first 13 and a second holding pin 16 supported resiliently by springs 14 and 17 and subjected to a caulking process using a caulking die 10. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a connecting device for connecting a terminal and an end of a wiring material by a caulking method (piercing or crimping).

[0002]

2. Description of the Related Art The piercing method, which is one of the caulking methods, is a flexible flat cable or flexible
It is used to connect terminals and wiring materials that use flat conductors such as printed circuits.

A conventional method of connecting a terminal and a wiring member by the piercing method will be described with reference to FIGS.

Here, an example is shown in which a flexible flat cable as a wiring member is connected to the female side terminal of the male and female both side terminals.

As shown in FIGS. 6 and 7, a terminal (pierce terminal) 1 has a cylindrical fitting portion 2 into which a male terminal is inserted, and a cable connecting portion 4 having a plurality of piercing blades 3. It is made up of a series of units.

On the other hand, the flexible flat cable (hereinafter, simply referred to as a cable) 5 has a plurality of flat conductors (usually conductive metal foils) arranged in parallel at intervals.
Covering material 6 made of an electrically insulating film on both front and back sides of 6 ...
It is constructed by coating with.

Plural sets of the piercing blades 3 are provided as a pair of right and left, and are provided at a constant pitch in the cable length direction.
The piercing blades 3 ... (Terminal 1) and the conductor 6 are electrically and mechanically fixed to each other by caulking and fixing the piercing blades 3 ... Connected.

The details of this connection procedure are shown in FIGS.

As shown in the upper part of FIG. 8, the covering material 7 between the conductors 6 ... In the end part of the cable 5 is cut into a groove shape to separate the end parts for each conductor 6 ,. .. are set on the jig 8.

The jig 8 includes a bottom surface 9a and left and right guide surfaces 9
a plurality of terminal accommodating portions 9 defined by b and 9b
(Only one is shown here), and each terminal accommodating portion 9
The cable connection part 4 of the terminal 1 is accommodated therein.

In this state, the caulking dies 10 set so as to face the respective terminal accommodating portions 9 ... (Each cable separating portion 5a).
To lower the cable separating portion 5a to the cable connecting portion 4
8 by pushing each of the piercing blades 3 ... of the cable connecting portion 4 into the cable separating portion 5a.
Securely crimp to the conductor with the conductor penetrating.

[0012]

However, according to this conventional connecting method, if the cable separating portion 5a has a bending tendency or a bending tendency or there is an error in its width dimension, as shown on the left side of FIG. In some cases, the cable separating portion 5a may be set on the jig 8 while being inclined in the width direction (or the length direction). Alternatively, the set position may be displaced, and when the caulking die 10 is lowered, the cable separating portion 5
In some cases, a may interfere with the guide surface 9b of the terminal accommodating portion 9 and move.

In such a state, the cable connecting portion 5a is not pushed into the cable connecting portion 4 in the correct direction, but is tilted or displaced as shown in the upper right or lower right of FIG. There was a problem that a proper connection state could not be obtained, such as being crimped to No. 4.

This problem occurs not only in the piercing method but also in the crimping method in general, and the caulking and connecting work is generally performed, and improvement of this point has been desired.

Therefore, the present invention provides a method for connecting a terminal and a wiring member, and a device therefor, capable of caulking and connecting the terminal and the wiring member in an appropriate state without tilting or displacement.

[0016]

According to a first aspect of the invention (a connecting method), there is provided a method of connecting a terminal and a wiring material, wherein the wiring material is pressed into a wiring material connecting portion provided on the terminal with a caulking die to make a caulking connection. A first holding pin that penetrates the pin hole and contacts one surface of the wiring material; and a second protrusion that projects from the caulking die and contacts the other surface of the wiring material. Wiring material is sandwiched between the holding pins and held, and both holding pins are moved in conjunction with the crimping die to crimp the wiring material to the wiring material connecting portion while maintaining the holding state of the wiring material. Is.

According to a second aspect of the present invention, in the method of the first aspect, the first and second holding pins are provided at a plurality of positions in the length direction of the terminal, and the wiring material is provided at the plurality of positions in the length direction by the holding pins. To hold.

According to a third aspect of the present invention, in the method according to the first or second aspect, both the first and second holding pins are elastically supported by springs, and the both holding pins are interlocked with a caulking type by expansion and contraction of the spring. And move it.

According to a fourth aspect of the present invention, in the method according to any one of the first to third aspects, a flexible flat as a wiring member is formed by electrically insulating and covering a plurality of flat conductors arranged in parallel at intervals. The cable is crimped to the wiring material connection portion while being held by the first and second holding pins for each conductor.

According to a fifth aspect of the present invention, in the method of the fourth aspect, the wiring member connecting portion is provided with a plurality of piercing blades, and each of the piercing blades is caulked with the flexible flat cable penetrating the conductor. is there.

The invention of claim 6 (connecting device) is a device for connecting a terminal and a wiring member, which is configured so that the wiring member is pressed into a wiring member connecting portion provided on the terminal with a caulking die to make a caulking connection. A pin hole is provided in the wiring material connecting portion of the terminal, and a first holding pin that penetrates the pin hole and contacts one surface of the wiring material and a first holding pin that projects from the caulking die and contacts the other surface of the wiring material A second holding pin; and a pin interlocking means for moving the both holding pins interlockingly with the crimping die, wherein the pin is held with the wiring member sandwiched between the first and second holding pins. By interlocking means to move both holding pins in conjunction with the caulking die, the wiring material is caulked at the wiring material connecting portion while holding the wiring material.

According to a seventh aspect of the present invention, in the structure of the sixth aspect, the wiring member can be held at a plurality of positions in the lengthwise direction,
The first and second holding pins are provided at a plurality of positions in the length direction of the terminal.

According to an eighth aspect of the present invention, in the structure of the sixth or seventh aspect, as the pin interlocking means, a spring is provided which expands and contracts while elastically supporting both the first and second holding pins.

According to a ninth aspect of the present invention, in the structure according to any of the sixth to eighth aspects, a jig is provided in which a plurality of terminal accommodating portions for accommodating the terminals are arranged in parallel, and the terminal accommodating portion supports the terminals. Has a bottom surface and a guide surface for guiding the wiring member and the caulking die, the bottom surface of the terminal accommodating portion accommodates the first holding pin, and the caulking die accommodates the second holding pin. Two pin guide holes are provided respectively.

According to the above method and apparatus, the wiring material (the flexible flat cable in claims 4 and 5) is the first.
And the second holding pin is sandwiched and held, and both holding pins move in conjunction with the crimping die, so that the caulking operation (piercing in claim 5) is performed while the holding state is maintained. Be seen.

Therefore, the wiring member has a bending tendency or a bending tendency, or is set with a slight inclination, or the wiring member is set.
Even if the wiring material interferes with the jig's guide surface when the jig is pressed in,
The holding force of the pin acts as a force for correcting the bending habit or the bending habit of the wiring material or a force for preventing the displacement movement.

Therefore, the wiring member can reach the caulking position in the correct direction and the proper connection state can be obtained.

In particular, according to the method of the second aspect and the apparatus of the seventh aspect, since the wiring member is held by the holding pins at a plurality of positions in the length direction, even if the connecting portion of the wiring member is long, the entire connecting portion is even. It is possible to more reliably obtain a proper connection state by holding the above.

Further, according to the method of claim 3 and the device of claim 8, since the spring is used as the pin interlocking means for moving the holding pin in conjunction with the caulking die, the caulking die and the holding pin are crank mechanism or the like. The structure is simple and compact compared to the case of connecting by the interlocking mechanism of. Moreover, this spring expands and contracts in response to the load applied to the holding pin by the movement of the crimping die, so that the holding pin can be accurately interlocked with the crimping die.

[0030]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described with reference to FIGS.

In this embodiment, the case where the piercing terminal is caulked and connected to the end of the flexible flat cable in accordance with the description of the prior art is taken as an example. Further, in this embodiment, the same parts as the known parts shown in FIGS. 6 to 9 are designated by the same reference numerals, and the duplicated description thereof will be omitted.

As shown in FIGS. 1 and 2, a plurality (four in the illustrated example) of pin holes 11 are provided in the cable connecting portion 4 of the terminal 1 at intervals in the terminal length direction.

The pin holes 11 ...
It is provided at a position displaced in the terminal length direction with respect to the piercing blades 3 so as not to interfere with the caulking connection of a.

On the other hand, as shown in FIGS. 3 to 5, the first pin guide hole 1 is formed on the bottom surface 9a of the terminal accommodating portion 9 of the jig 8.
2 is provided, and the first holding pin 13 is provided in the first pin guide hole 12 so as to be slidable in the axial direction (vertical direction).

The first holding pin 13 is elastically supported from below by the first spring 14, and is biased upward by this spring force.

On the other hand, a second pin guide hole 15 is provided in the caulking die 10 arranged so as to face the jig 8, and a second holding pin 16 is provided in the second pin guide hole 15 so as to face downward by a second spring 17. It is provided so as to be slidable in the axial direction (vertical direction) while being biased by.

Next, the procedure and operation of the caulking work by this apparatus will be described.

As shown in FIG. 3, the terminal accommodating portion 9 of the jig 8
1, the cable connecting portion 4 of the terminal 1 shown in FIG. 1 is accommodated, and the cable separating portion 5a is set above it.

At this time, the first holding pin 13 has the pin hole 11
And the cable separating portion 5a is supported from below.

When the caulking die 10 is lowered in this state, the second holding pin 16 comes into contact with the cable separating portion 5a from above and the cable separating portion 5 is formed between the second holding pin 16 and the first holding pin 13.
4a is sandwiched, the cable separating portion 5a is pushed into the terminal accommodating portion and contacts the piercing blade 3 of the cable connecting portion 4 as shown in FIG. 4, and as shown in FIG. 5a is pierced and fixed by caulking.

After that, the caulking die 10 is raised, and the cable separating portion 5a and the cable connecting portion 4 are taken out from the jig 8 as a unit.

During the crimping operation, the first and second holding pins 13 and 16 are interlocked with the crimping die 10 by the expansion and contraction action of the first and second springs 14 and 17 in response to the downward movement of the crimping die 10. And move, and the cable separation part 5a is always
Is held in place.

Due to the holding force of both the holding pins 13 and 16, the cable separating portion 5a has a bending tendency or a bending tendency, or is set with a slight inclination, or the same portion 5a.
Even if it interferes with the guide surfaces 9b, 9b of the terminal accommodating portion 9 when it is pushed in, the bending tendency and the bending tendency of the cable separating portion 5a are corrected or the shift movement is prevented.

Therefore, the cable separation portion 5a can be reached in the correct direction to the caulking position in FIG. 5 and a proper connection state can be obtained.

By the way, in the above-mentioned embodiment, the cable separating portion 5a is provided with a plurality of first and second both holding pins 13, 1.
Although it is configured to be held at a plurality of positions in the length direction by 6, it may be configured to be held by only one holding pin 13, 16. In this case, both holding pins 13 and 16 may be formed in a plate shape elongated in the cable length direction so as to obtain substantially the same holding action as holding at a plurality of places as in the above embodiment.

The present invention is not limited to the case where the flexible flat cable described in the above embodiment is crimped by the piercing method, but when crimped (as a typical example, a plurality of round conductors are collectively covered). When each conductor of the flat cable is crimped to a crimp terminal).

[0047]

As described above, according to the present invention, the caulking operation by the caulking die is performed while the wiring member is sandwiched and held between the first and second holding pins that move in conjunction with the caulking die. Therefore, if the wiring material has a bending tendency or a bending tendency, it is set with a slight inclination, or if a jig is used, the wiring material may interfere with the guide surface of the jig when it is pushed in by the caulking die. Also, the bending force and the bending tendency of the wiring material can be corrected by the holding force of the pin, and the displacement movement of the wiring material can be prevented.

Therefore, the wiring member can be reached in the correct direction to the caulking position, and a proper connection state can be obtained.

Particularly, according to the method of claim 2 and the device of claim 7, since the wiring material is held by the holding pins at a plurality of positions in the length direction, even if the connection portion of the wiring material is long, the entire connection portion is even. It is possible to more reliably obtain a proper connection state by holding the above.

[Brief description of drawings]

FIG. 1 is a perspective view of a terminal used in an embodiment of the present invention.

FIG. 2 is a plan view of the terminal.

FIG. 3 is a cross-sectional view showing a state where the terminal is set on a jig.

FIG. 4 is a cross-sectional view showing an initial stage of caulking in which the caulking die is lowered from the state of FIG.

FIG. 5 is a cross-sectional view showing a state in which the caulking die is further lowered from the state of FIG. 4 and caulking is completed.

FIG. 6 is a perspective view of a terminal and a flexible flat cable for explaining a conventional technique before caulking.

FIG. 7 is a perspective view of the same crimped state.

FIG. 8 is a diagram showing a caulking procedure.

FIG. 9 is a diagram for explaining a problem of caulking according to a conventional technique.

[Explanation of symbols]

1 terminal 3 terminal piercing blade 4-terminal cable connection (wiring material connection) 5 Flexible flat cable as wiring material 5a Separated part of wiring material terminal 8 jigs 9 Jig terminal housing 10 caulking type 11 Cable connection pin hole 13 1st holding pin 12 1st pin guide hole 14 first spring 16 Second holding pin 15 2nd pin guide hole 17 Second spring

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Saito Nei             1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi             Auto Network Technical Laboratory Co., Ltd. F-term (reference) 5E051 JA03 JA07                 5E077 BB05 BB11 DD08 DD11 FF04                       FF07 JJ11

Claims (9)

[Claims] 1. A method for connecting a terminal and a wiring member, wherein a wiring member is pressed into a wiring member connecting portion provided on a terminal with a caulking die to connect the terminal and the wiring member by providing a pin hole in the wiring member connecting portion of the terminal. The wiring material is sandwiched and held between a first holding pin that penetrates the pin hole and contacts one surface of the wiring material, and a second holding pin that projects from the caulking die and contacts the other surface of the wiring material. A method of connecting a terminal and a wiring member, characterized in that the holding member is moved in conjunction with the crimping die to crimp the wiring member to the wiring member connecting portion while maintaining the holding state of the wiring member. 2. The first and second holding pins are provided at a plurality of positions in the length direction of the terminal, and the wiring member is held by the holding pins at a plurality of positions in the length direction. How to connect wiring materials. 3. The first and second holding pins are elastically supported by springs, and both holding pins are moved by interlocking with a caulking die by expansion and contraction of the springs.
Alternatively, the method of connecting the terminal and the wiring member described in 2. 4. A flexible flat cable as a wiring member, which comprises a plurality of flat conductors arranged in parallel at intervals with electrical insulation coating, and a first flexible flat cable for each conductor.
The method for connecting a terminal and a wiring material according to claim 1, wherein the wiring material connecting portion is caulked while being held by the second holding pins. 5. The terminal and the wiring material according to claim 4, wherein the wiring material connecting portion is provided with a plurality of piercing blades, and the piercing blades are caulked with the flexible flat cable in a state of penetrating the conductor. Connection method. 6. A terminal-wiring material connecting device configured to press a wiring material into a wiring material connecting portion provided on a terminal by caulking to make a caulking connection, and a pin for the wiring material connecting portion of the terminal. A first holding pin provided with a hole and penetrating the pin hole to contact one surface of the wiring material, and a second holding pin protruding from the caulking die and contacting the other surface of the wiring material.
The first and second holding pins are provided with holding pins and pin interlocking means for moving the holding pins in conjunction with the caulking die.
With the wiring material sandwiched between the two holding pins and held, the two holding pins are moved in conjunction with the caulking die by the pin interlocking means, so that the wiring material is held while holding the wiring material. A terminal-wiring member connecting device characterized in that it is configured to be caulked. 7. The first and second holding pins are provided at a plurality of positions in the length direction of the terminal so that the wiring member can be held at a plurality of positions in the length direction. Device for connecting terminals and wiring materials. 8. The terminal-wiring member connecting device according to claim 6, wherein the pin interlocking means is provided with a spring that expands and contracts while elastically supporting the first and second holding pins. . 9. A jig in which a plurality of terminal accommodating portions for accommodating terminals are arranged side by side, wherein the terminal accommodating portion has a bottom surface for supporting the terminals and a guide surface for guiding the wiring material and the caulking die. Then, a first pin guide hole for accommodating the first holding pin and a second pin guide hole for accommodating the second holding pin are provided on the bottom surface of the terminal accommodating portion, respectively. 9. A device for connecting a terminal and a wiring member according to any one of 8 to 8.